Film extrusion mechanism for capacitor

Abstract

The utility model discloses a thin film extrusion mechanism for a capacitor, and relates to the technical field of thin film winding. A left supporting plate is installed on the left side of the top end of the working table, the top end of the left supporting plate is connected with a right winding shaft, a plurality of expansion pieces are installed on the surface of the winding shaft in an embedded mode, the rear end of the left supporting plate is connected with a motor, the top end of the working table is connected with a second fixing block, and the second fixing block is connected with a first connecting block. A first connecting shaft is connected to the top end of the first connecting block, an adjusting block is connected to the top end of the first connecting shaft, and a first lead screw is connected into the adjusting block. By arranging the second connecting shaft and the adjusting plate, the expansion piece can move, so that the expansion piece can abut against the interior of a thin film and compress the thin film, the thin film is prevented from being rolled in air in the rolling process to generate bumps, electrochemical reaction of the capacitor under the combined action of an electric field and residual air between elements is avoided, and the service life of the capacitor is prolonged. And the winding quality is influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of film winding, and specifically relates to a film extrusion mechanism for capacitors. Background Art

[0002] Film capacitors are excellent capacitors due to many excellent characteristics. Polypropylene films are used in these capacitors. Few existing film winding devices are equipped with automated mechanisms. During use, manual labor is required to help tighten the film, which cannot achieve automation, reduces production efficiency, cannot reduce manual intervention, and increases the burden during the operation process.

[0003] The Chinese patent with the publication number CN220200821U discloses a film winding device for the production of film capacitors. When in use, first, the motor operates to transmit kinetic energy to the main gear through the main rotating shaft to make it rotate. Then, the main gear drives other parts in the automatic winding mechanism to complete the winding of the film. Finally, the outer shell protects the automatic winding mechanism from the influence and damage of external factors. However, air is easily involved during the film winding process, resulting in bulges, which cause electrochemical reactions under the combined action of the electric field and the residual air between the capacitor and the components, affecting the winding quality.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a film extrusion mechanism for capacitors, which solves the problems raised in the above background art.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present utility model is as follows:

[0007] A film extrusion mechanism for capacitors includes a workbench. A left support plate is installed on the left side of the top of the workbench. A right winding shaft is connected to the top of the left support plate. A number of expansion members are embedded on the surface of the winding shaft. A motor is connected to the rear end of the left support plate. A second fixing block is connected to the top of the workbench. The second fixing block is connected to a first connecting block. A first connecting shaft is connected to the top of the first connecting block. A regulating block is connected to the top of the first connecting shaft. A first lead screw is connected inside the regulating block. A second connecting block is connected to the top of the first lead screw. Two first fixing blocks are connected to the top of the workbench. The first fixing blocks are connected to connecting rods. An adjusting roller is connected between the tops of the connecting rods. An adjusting rod is connected between the middles of the connecting rods. A right support plate is installed on the right side of the top of the workbench. A conveying roller is connected to the right support plate.

[0008] Optionally, a second screw rod is connected to the winding shaft, a rotating knob is connected to the front end of the second screw rod, an adjustment plate is sleeved on the surface of the second screw rod, a third connecting block is connected to the rear end of the adjustment plate, a second connecting shaft is connected to the surface of the third connecting block, and an expansion piece is connected to the top end of the second connecting shaft.

[0009] Optionally, the motor output shaft is fixedly connected to the winding shaft, the rotating knob passes through the left support plate and is fixedly connected to the second screw rod, and is rotationally connected to the left support plate.

[0010] Optionally, there are four expansion members with arc-shaped cross sections, located at the upper, lower, left and right ends of the winding shaft respectively.

[0011] Optionally, a groove is provided in the expansion member, the groove is semicircular, and a cylinder is provided in the groove, the cylinder passes through and is connected to the second connecting shaft, and the second connecting shaft is rotatably connected to the expansion member.

[0012] Optionally, a thread is provided in the middle of the adjustment plate, and the second screw rod is threadedly connected to the adjustment plate.

[0013] Optionally, the first connecting shaft is rotatably connected to the adjusting block, a thread is provided in the adjusting block, the adjusting block is threadedly connected to the first screw rod, and the first screw rod is rotatably connected to the second connecting block.

[0014] Optionally, the adjusting rod passes through the second connecting block and is rotatably connected to the connecting rod, and the adjusting roller is rotatably connected to the connecting rod.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0016] 1. The second connecting shaft and the adjustment plate enable the expansion member to move, allowing it to press against the inside of the film, compressing the film and preventing it from bulging due to air being drawn into it during the winding process. This also prevents the electrochemical reaction between the electric field and the residual air between the capacitors, which affects the winding quality.

[0017] 2. The connecting rod can be moved by providing an adjustment block and a first screw rod. When the adjustment block drives the first screw rod upward, the connecting rod moves to the right. When the adjustment block drives the first screw rod downward, the connecting rod moves to the left, thereby facilitating the adjustment roller to adjust the film tension.

[0018] 3. By providing an adjusting roller and a connecting rod, since the adjusting roller and the connecting rod are rotationally connected, the adjusting roller will be in a rotating state when the film is moving, so it will not affect the efficiency of film winding and the quality of the film.

[0019] The following further describes in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0020] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the attached

[0021] In the figures:

[0022] Figure 1 is a schematic diagram of the overall structure;

[0023] Figure 2 is a schematic diagram of the internal structure of the winding shaft;

[0024] Figure 3 is a schematic diagram of the partial sectional structure of the winding shaft;

[0025] Figure 4 is a schematic diagram of the sectional structure of the first connecting shaft, adjusting block and second connecting block;

[0026] Figure 5 is a schematic diagram of the structure of the first connecting shaft, adjusting block and second connecting block.

[0027] In the drawings, the list of components represented by each reference numeral is as follows:

[0028] 1. Workbench; 2. Left support plate; 3. Winding shaft; 4. Expansion member; 5. Rotating knob; 6. Motor; 7. Right support plate; 8. First fixing block; 9. Connecting rod; 10. Adjusting roller; 11. Adjusting rod; 12. Second fixing block; 13. First connecting block; 14. First connecting shaft; 15. Adjusting block; 16. First lead screw; 17. Second connecting block; 18. Second connecting shaft; 19. Second lead screw; 20. Adjusting plate; 21. Third connecting block; 22. Conveyor roller.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0030] Now, the present utility model will be further described in detail in conjunction with the accompanying drawings.

[0031] Please refer to Figures 1-5As shown, in this embodiment, a film extrusion mechanism for capacitors is provided, including a workbench 1, a left support plate 2 is installed on the left side of the top of the workbench 1, the top of the left support plate 2 is connected to the right winding shaft 3, a plurality of expansion parts 4 are embedded and installed on the surface of the winding shaft 3, the rear end of the left support plate 2 is connected to the motor 6, the top of the workbench 1 is connected to the second fixed block 12, the second fixed block 12 is connected to the first connecting block 13, the top of the first connecting block 13 is connected to the first connecting shaft 14, the top of the first connecting shaft 14 is connected to the adjusting block 15, the adjusting block 15 is connected with the first screw rod 16, the top of the first screw rod 16 is connected to the second connecting block 17, the top of the workbench 1 is connected to two first fixed blocks 8, the first fixed block 8 is connected to the connecting rod 9, the top of the connecting rod 9 is connected with an adjusting roller 10, the middle of the connecting rod 9 is connected with an adjusting rod 11, the top right of the workbench 1 is installed with a right support plate 7, and the right support plate 7 is connected to a conveying roller 22.

[0032] The left support plate 2 is located on the left side of the top of the workbench 1, and plays the role of supporting the right winding shaft 3. Several expansion members 4 are embedded and installed on the surface of the right winding shaft 3. The expansion members 4 are used to better fix the film when winding the film to prevent the film from being drawn into air and generating bubbles during the winding process. The first connecting shaft 14 at the top of the first connecting block 13 plays the role of connecting and supporting the adjusting block 15. The adjusting roller 10 connected between the tops of the connecting rods 9 can guide and adjust the tension of the film. During the film winding process, the position and angle of the adjusting roller 10 can affect the transmission direction and tension of the film. The adjusting rod 11 connected between the middle parts of the connecting rods 9 may be used to further adjust the position or angle of the connecting rod 9, so as to more accurately control the effect of the adjusting roller 10. The right support plate 7 is installed on the right side of the top of the workbench 1 and is connected to the conveying roller 22. The conveying roller 22 is used to convey the extruded film so that it can smoothly enter the subsequent processing link or winding link.

[0033] In this embodiment, a second lead screw 19 is connected inside the take-up reel 3. The front end of the second lead screw 19 is connected to a rotary knob 5. A regulating plate 20 is sleeved on the surface of the second lead screw 19. The rear end of the regulating plate 20 is connected to a third connecting block 21. The surface of the third connecting block 21 is connected to a second connecting shaft 18. The top end of the second connecting shaft 18 is connected to an expansion member 4. The output shaft of the motor 6 is fixedly connected to the take-up reel 3. The rotary knob 5 passes through the left support plate 2 and is fixedly connected to the second lead screw 19 and is rotatably connected to the left support plate 2. There are 4 expansion members 4 in total, and the cross-section is arc-shaped, located at the upper, lower, left, and right ends of the take-up reel 3 respectively. A groove is formed inside the expansion member 4. The groove is semi-circular and is provided with a cylinder inside. The cylinder penetrates and connects to the second connecting shaft 18. The second connecting shaft 18 is rotatably connected to the expansion member 4. A thread is formed in the middle of the regulating plate 20. The second lead screw 19 is threadedly connected to the regulating plate 20. The first connecting shaft 14 is rotatably connected to the regulating block 15. A thread is provided inside the regulating block 15. The regulating block 15 is threadedly connected to the first lead screw 16. The first lead screw 16 is rotatably connected to the second connecting block 17. The adjusting rod 11 passes through the second connecting block 17 and is rotatably connected to the connecting rod 9. The adjusting roller 10 is rotatably connected to the connecting rod 9.

[0034] The rotation of the second lead screw 19 can be controlled by the rotary knob 5. The rotary knob 5 passes through the left support plate 2 and is fixedly connected to the second lead screw 19 and is rotatably connected to the left support plate 2, ensuring that when the rotary knob 5 is operated, it can stably drive the second lead screw 19 to rotate inside the take-up reel 3, and the left support plate 2 provides stable support for the entire structure. When the second lead screw 19 rotates, due to the effect of the thread, the regulating plate 20 will move along the axial direction of the second lead screw 19. The movement of the regulating plate 20 can be transmitted to the expansion member 4 through the third connecting block 21 and the second connecting shaft 18, thereby realizing the adjustment of the position of the expansion member 4. When the expansion member 4 moves, it can fix and support the wound film in multiple directions to ensure the stability of the film during the winding process. While the expansion member 4 moves along with the regulating plate 20, it can also rotate to a certain extent to better adapt to the winding requirements of films with different shapes and thicknesses.

[0035] Working principle:

[0036] First, place the film on the surface of the conveying roller 22, then pass it through between the adjusting roller 10 and the adjusting rod 11, and then start the motor 6 to wind the film on the surface of the winding shaft 3. When it is necessary to adjust the tension of the film, rotate the adjusting block 15 to make the first lead screw 16 move downward along the inner wall of the adjusting block 15, thereby driving the second connecting block 17 to move downward following the first lead screw 16. Since the adjusting rod 11 passes through the second connecting block 17, the adjusting rod 11 moves downward following the second connecting block 17, thereby driving the connecting rod 9 to move downward, making the adjusting roller 10 contact the surface of the film and pressing the film, playing a role in adjusting the tension of the film; when there are bubbles during the winding of the film and the degree of fit with the surface of the winding wheel is low, turn off the motor 6 to stop winding, and then rotate the rotary knob 5 to drive the second lead screw 19 to rotate. The second lead screw 19 drives the adjusting plate 20 to move back and forth along the second lead screw 19, thereby driving the second connecting shaft 18 to move. When the angle between the second connecting shaft 18 and the inner wall of the expansion member 4 gradually becomes perpendicular, the expansion member 4 will gradually move outward from the winding shaft 3 due to the support of the second connecting shaft 18. When there is a film wound on the surface of the winding shaft 3, the expansion member 4 can press against the inside of the film to compress the film, preventing the film from having a low degree of fit with the surface of the winding wheel due to bubbles during the winding process and affecting the winding quality.

[0037] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, fall within the protection scope of the present utility model. The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A capacitor film extrusion mechanism, comprising a workbench (1), characterized in that: On the left side of the top of the workbench (1), a left support plate (2) is installed. The top of the left support plate (2) is connected to a right take-up reel (3). A number of expansion members (4) are embedded on the surface of the take-up reel (3). The rear end of the left support plate (2) is connected to a motor (6). The top of the workbench (1) is connected to a second fixing block (12). The second fixing block (12) is connected to a first connecting block (13). The top of the first connecting block (13) is connected to a first connecting shaft (14). The top of the first connecting shaft (14) is connected to an adjusting block (15). A first lead screw (16) is connected inside the adjusting block (15). The top of the first lead screw (16) is connected to a second connecting block (17). Two first fixing blocks (8) are connected to the top of the workbench (1). The first fixing block (8) is connected to a connecting rod (9). An adjusting roller (10) is connected between the tops of the connecting rods (9). An adjusting rod (11) is connected between the middles of the connecting rods (9). On the right side of the top of the workbench (1), a right support plate (7) is installed. The right support plate (7) is connected to a conveying roller (22).

2. The film extrusion mechanism for a capacitor according to claim 1, wherein: A second lead screw (19) is connected inside the take-up reel (3). The front end of the second lead screw (19) is connected to a rotary knob (5). An adjusting plate (20) is sleeved on the surface of the second lead screw (19). The rear end of the adjusting plate (20) is connected to a third connecting block (21). A second connecting shaft (18) is connected to the surface of the third connecting block (21). The top of the second connecting shaft (18) is connected to an expansion member (4).

3. The thin film extrusion mechanism for a capacitor according to claim 1, wherein: The output shaft of the motor (6) is fixedly connected to the take-up reel (3). The rotary knob (5) passes through the left support plate (2) and is fixedly connected to the second lead screw (19), and is rotatably connected to the left support plate (2).

4. The capacitor film extrusion mechanism according to claim 1, characterized in that: There are 4 expansion members (4) in total, and the cross-section is arc-shaped, and they are respectively located at the upper, lower, left, and right ends of the take-up reel (3).

5. A film extrusion mechanism for a capacitor according to claim 1, characterized in that: A groove is opened in the expansion member (4). The groove is semi-circular, and a cylinder is provided inside. The cylinder is connected through and is connected to the second connecting shaft (18). The second connecting shaft (18) is rotatably connected to the expansion member (4).

6. The thin film extrusion mechanism for a capacitor according to claim 2, characterized in that: Threads are opened in the middle of the adjusting plate (20). The second lead screw (19) is threadedly connected to the adjusting plate (20).

7. A film extrusion mechanism for a capacitor according to claim 1, characterized in that: The first connecting shaft (14) is rotatably connected to the adjusting block (15). Threads are provided inside the adjusting block (15). The adjusting block (15) is threadedly connected to the first lead screw (16). The first lead screw (16) is rotatably connected to the second connecting block (17).

8. The capacitor film extrusion mechanism according to claim 1, characterized in that: The adjusting rod (11) passes through the second connecting block (17) and is rotatably connected to the connecting rod (9). The adjusting roller (10) is rotatably connected to the connecting rod (9).

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